Hidden underground, the trains of New York's Penn Station are often forgotten, yet move half a million people in and out of the City each day.

In this video from PBS' American Experience, take a peek at the train control station that seamlessly coordinates all of that movement.

Half a million people pass through New York City's Penn Station every day. During rush hour, a train arrives at a platform every 58 seconds. Phil Kaplan has worked for Amtrak for 37 years, and he takes us for an unusual behind the scenes look at the Central Control room.